Configuring Igmp - Avaya Cajun P882 User Manual

Configuring IGMP

Globally
Enabling IGMP
Using the Web
Agent
Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1
* Note: Interfaces configured for IGMP forwarding will not be
able to participate in multicast sessions distributed
through DVMRP Routing.
Multicast Routing - allows a switch to deliver multicast traffic
between neighboring routers and across the network using
Distance Vector Multicast Routing Protocol (DVMRP).To
configure interfaces for multicast routing select DVMRP for
multicast protocol on all interfaces that are part of a multicast
network.Since IGMP is required on all interfaces that have
multicast clients, IGMP is enabled automatically on all interfaces
configured for DVMRP.
* Note: You must globally enable IP multicast routing in order to
successfully configure IGMP or DVMRP. Refer to
"Routing Function," earlier in this chapter, for
instructions on enabling IP multicast routing.
IGMP enables hosts to inform routers when they join or leave
groups. Routers periodically query hosts (query interval) for the
groups in which the hosts are members. When there is more than
one router in a broadcast domain (subnet), one of the routers
becomes the designated querier. Only the designated router queries
the hosts.
Both IGMP Version 1.0 and IGMP Version 2.0 are supported. After
selecting the specific IGMP version for an interface, you can
manually configure the Version 1.0 querier. The selection of the
querier for Version 2.0 is dynamic but can be overridden.
Configuring IGMP includes enabling IGMP and the MTRACE
globally on the switch. You can do this from either the Web Agent
or the CLI.
* Note: You also have to enable multicast forwarding from the
Routing > IP > Configuration > Global
To globally enable IGMP from the Web Agent:
1. Select Global Configuration from the Routing > IP >
Configuration group in the Web Agent window. The IP
Global Configuration dialog box opens (Figure 9-15).
Configuring IP Routing
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